Side seal for glass containers and the like.



H. E. TOWNSEND. SIDE SEAI. FOR GLASS CONTAINERS AND THE LIKE.

APPLICATION min JAN 10 191 1,242,743. I Patented Oct. 9,1917.

WITNESSES."

' INVENTOR BY W 4.1 ATTORNEYS UNITED STATES PATENT OFFICE.

HARRY E. TOWNSEND, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE ANCHOR GAP &CLOSURE CORPORATION, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Oct. 9, 1917.

Application fled January 10, 1917. Serial No. 141,558.

To all whom it may concern:

Be it known that I, HARRY E. TOWNSEND, a citizen of the United States,and a resident of the city of Brooklyn, in the county of Kings, State ofNew York, have invented certain new and useful Improvements in SideSeals for Glass Containers and the like, of which the following is aspecification.

This invention relates to scaling closures adapted to be applied toglass containers and the like and has articular reference to the type ofclosure disclosed in my prior Patent No. 1,159,624, granted Nov. 9,1915,upon which this invention constitutes an improvement. In this type ofclosure the seal is effected against the side wall of the container bycompression of the gasket so that the gasket is squeezed laterallyagainst the container wall.

The objects of this invention include the provision of a closure of thecharacter specified, and wherein the amount of power for scaling isreduced, as well as the glass breakage, and wherein the latitude ofvariation of the sizes of glass containers is increased, and alsowherein a better and more effective seal is provided.

These various im rovements ma be accomplished by proc ucing the sea witha smaller cross-sectional area in the bead portion of the seal andproviding a short depending skirt adjacent the bead, which skirt isslightly inclined or is substantially parallel to the side wall of thecontainer, thereby compresing the gasket against the side wall in suchmanner as to provide a larger sealing surface with the glass, andwherein substantially all of which surface is supported by the deformedmetal portion of the closure.

F igune 1 illustrates in elevation the closure applied to a glasscontainer such as a tumbler.

Fig. 2 is a detail view illustrating a section through a portion of'theclosure and the work faces of the sealing jaws prior to the sealingoperation.

Fig. 3 is a detail view showing in section a portion of the closure andsealing jaws at the completion of the sealing operation.

In the prior art referred to the lower edge of the asket issubstantially unsupported, the sea? being effected between thehornshaped portion of the head, the upper side wall of the said head,and the side wall of the glass. the present invention the seal islikewise effected between the hornshaped portion of the head, the up orside wall thereof, to which is added 1; e very material benefit of thedepending skirt which very tightly compresses the gasket directlyagainst the side wall of the lass.

By formin the horn portion of t e bead smaler, the deforming surfacearea of the die isreduced and since the skirt portion comprises metalwhich is bent or flowed over the deformin portion of the die, the format1on of the s irt portion requires relatively little power, as comparedwith the prior closures, so far as the closing ower of the chucks ordies is concerned an at the same time the lateral forces produced by thegasket material being squeezed inwardly in forming the horn portion arefully conserved by bein firmly supported by the skirt.

The act that a wider surface or sealing area is provided by thisclosure'enables this closure to be used successfully on glass containershaving considerable relative variation in sizes. This has the effect ofreducing breakage and also of increasing the effectiveness of the sealsformed.

Referring now to the drawings, the glass container 1, may if desired beprovided with a cylindrical sealin surface 2 adjacent the mouth of thecontainer. The closure cap is provided with a top or cover portion 4which carries an annular beading having walls 5 and 6 and preferabl withslightly inturned lower edges 7. his beading is preferably s acedslightly below the cover ortion 5 as y means of a depending wall 8, inorder that the seal may be made slightly below the upper edge of theglass container which in most cases contains the greatest amount ofirregularities. The immediate foregoing description refers to theclosure before the seal is formed.

A pair of forming dies comprising an anvil member 9 having an annularcup shaped ring 10 and a cylindrical wall 11 formed in the lower portionthereof is adapted to coiiperate with a chuck member '12 provided withan annular head 14. Suitable mechanism, as for example, the structuredisclosed in the patent to Hull No. 1,134,065, is provided for operatingthe dies, so that the closing of the forming 'aws causes the metal toassume the shape ilustrated in Fig. 3 wherein the gasket 15 is forcedinwardly and read out a ainst the side wall of the container to rovide afinished closure, having a horn s aped portion 16 which provides asuitable receptacle for suificient body of the gasket to enable theresilienc thereof to maintain sealing pressure against the side walls ofthe glass even though there may be considerable variation in sizes ofthe glass. The depending skirt 17 below the horn shaped portion supportsthe portion of the gasket flowed out of the horn shaped portion 16 andthus comprises an annular band beneath which the gasket member is underconsiderable pressure. In view of the fact that a portion of the gasketwhile being laterally supported is permitted to escape outwardly anddownwardly, as at 18, less sealing force is required in makin this sealthan wherein the gasket is retaine in a relatively restricted ace.

Having thus descri ed my invention what I claim is 1. A closure forsealing on a substantially cylindrical side wall and provided with anannular beading and a gasket held under com ression between opposinwalls of the bea ing with a portion of said gasket displaced laterallyunder said compression against the substantially cylindrical wall of thecontainer, the said beading having a horn-shaped cross-sectionincreasing in area inwardly, and a depending annular skirt ex-, tendingdownwardly from said horn-shaped portion and retaining the lower portionof said gasket under com ression.

2. A closure provi edfwith an annular heading and a gasket undercompression between opposing walls of the beadin with a portion of saidgasket displaced aterally under said com ression against the wall of thecontainer, t e beading having its upper wall in the form ofa concavesurface and the opposing wall in the form of a convex surface, the twowalls being so related that the cross-sectional area of the beadingincreases inwar and downwardly, and an annular skirt epending from saidconvex surface, said annular skirt bein constructed to support the loweredge of sai asket.

3. A closure comprising, in com ination, a container, a cap providedwith a top portion and a de ending side portion; said side portion incuding an annular bead having a groove in the upper side thereof to forma concave portion, a fold adjacent said concave portion, a convex ringextending below the saidfold, an annular skirt beneath said convex ring;and a suitable gasket maintained under pressure between said dependingside portion and the side wall of said container with the upper andlower portions of the gasket under greater compression than the middleportion.

4. A closure comprising, in combination, a container, a cap having a topadapted to fit over said container, a side wall extending downwardlyover the side wall of said container, said side wall being provided witha bead including an annular fold of metal, a skirt de ending from saidbead, and a suitable gas et retained under pressure between said headsaid skirt and the side wall of said container with the upper and lowerportions of the gasket under greater compression than the middleportion.

5. In a closure, in combination, a container, a cap having a top portionand side portions extending downwardly over the mouth of said container,the side portion of the cap com rising an annular bead, a skirtdepending rom said annular bead, and a suitable gasket constructed to bemaintained under pressure between the side wall of the container theannular bead and the said skirt with the upper and lower portions undergreater compression than the middle portion.

HARRY E. TOVNSENB.

